How many solutions will this system of equations have? y = −3.5x − 3.5 y = −3.5x + 3.5

Question

no solution?

Answer 1

It's fairly easy to see that your first step ought to be to graph each of the two equations on one system of coordinates.

Two parallel lines; the only difference is that they have differing y intercepts.  NO SOLUTION.

 

If you subtract the second equation from the first, you get 0 = -7, which is a CONTRADICTION (impossibility); same interpretation as above.